1. Maternal death in the 21st century: causes, prevention, and relationship to cesarean delivery;Clark;Am J Obstet Gynecol,2008
2. ACOG practice bulletin no. 202: gestational hypertension and preeclampsia;Obstet Gynecol,2019
3. Vital signs: pregnancy-related deaths, United States, 2011–2015, and strategies for prevention, 13 states, 2013-2017;Petersen;MMWR Morb Mortal Wkly Rep,2019
4. Global, regional, and national levels and causes of maternal mortality during 1990-2013: a systematic analysis for the Global Burden of Disease Study 2013;Kassebaum;Lancet,2014
5. Maternal mortality and maternity care in the United States compared to 10 other developed countries;Tikkanen,2020